Paper feeding arrangement on writing or printing machines



Sept. 24., 1940-. w, KNlEHAHN r AL 2,216,081

PAPER FEEDING ARRANGEMENT on WRITING on PRINTING uacnmns Filed Jan. 14, 1959 10 Sheets-Sheet Z 17 Va 72 7 0 my. W Kyublalrz r F6. H. Eggs/w" pt. 24, 1 4 w. KNIEHAHN El AL 2,216,081

PAPER FEEDING ARRANGEMENT ON WRITING OR PRINTING MACHINES Filed Jan. 14, 1939 10 Sheets-Sheet 2 In Vcfifa/v: W kwlelzln 1 56. H, fyge/nr y Wmii Sept 24, 1940. w. KNIEHAHN ET AL PAPER FEEDING ARRANGEMENT ON WRITING 0R PRINTING MACHINES Filed Jan. 14, 1939 10 Sheets-Sheet 3 Inc/e77 Zo/w'; Q W K514391111: w

p 4, 1940- w. KNIEHAHN ET AL 2,216,081

nrsn FEEDING ARRANGEMENT ON wnmue on warm ncamss Filed Jan. 14, 1939 10 Sheets-Sheet 4 InVenza/wn VIZ/6212211172 Sept. 24, 1 40- w, KNIEHAHN ET AL PAPER FEEDING ARRANGEMENT ON WRITING 0R PRINTING MACHINES 1O Sheets-Sheet 5 Filed Jan. 14, 1939 PAPER FEEDING ARRANGEMENT ON WRITING OR PRINTING MACHINES Filed Jan. 14, 1939 10 Sheets-Sheet 6 Sept. 24, 1940. w. KNIEHAHN 5r AL PAPER FNEDING ARRANGEMENT ON WRITING QR PRINTING MACHINES 1o Sheets-Sheet 7 Sept. 24,, 1940. w. KNIEHAHN ET AL 2,215,031

PAPER FEEDING ARRANGEMENT ON WRITING 0n rnm'rnm Mommas Filed Jan. 14, 1939 10 Sheets-Sheet 8 Even Zaka:

fizzle/.1117 r F GJV. 5552M:

Sept. 24, 1940.

w. KNIEHAHN ET AL 2,216,081

PAPER FEEDING ARRANGEMENT ON WRITING 0R PRINTING MACHINES Filed Jan. 14, 1939 1o Shee ts-Sheet 9 weya' Patented Sept. 24, 1940 UNITED STATES PATENT OFFICE PAPER. FEEDING ARRANGEMENT ON WRIT- IN G R PRINTING MACHINES Application January 14, 1939, Serial No. 250,988 In Germany January 19, 1938 6 Claims. (Cl. 197128) The invention relates to an arrangement, on wrltingor printing machines especially on book- ,keeping machines or typewriters, for feeding strips (for instance composed of detachablesheets) of paper, preferably for making out bills. Arrangements of this kind feed the strips both "line by line and by sections" or relatively wide intervals. The line-spacing feed 'mechanism serves for lnscribing, in'succession, the amounts 10 to be entered in the bill, whilst the sectional feed supplements the line spacing mechanismto complete the forward movement in such a way as to bring the paper into a predetermined position for recording (for example) the first line of II 'the nextbill in each case.

The number of items to be entered, in vertical succession, on a bill varies, and consequently the total vertical feed distance through which the paper of the several bills is advanced by the lineso spacing feed must differ in extent. The sectlonal feed which supplements the line-spacing feed, to complete the forward movement of a bill, must therefore also vary in extent. For this reason, the known arrangements of this kind have to be equipped with complicated and expensive control devices which automatically determine the extent of the sectional feed stroke in accordance with the number of lines in a bill. It is an object of the invention to obviate the disadvantages of the known complicated devices by providing an improved arrangement for feed- Another object is to provide controllable coupling means for connecting the actuating members of the device for paper feeding by sections a with the machine drive of a writing or printing machine, more particularly of a calculating or book-keeping machine. 4

The invention offers the advantage that a carbon-copy strip, which is to beinscribed at the same time as the top copy strip can be passed, conjointly with the latter, over the line-spacing device, and, when the bill is completed can be advanced by merely the space of a single line,

, whereas the top-copy strip is advanced as far as I the first line of the succeeding sheet. Since, for the forward movement through the length of a sheet, the top-copy strip is disconnected from the line-spacing device through the lifting of the pressure rollers, the top-copy strip can be advanced the length of a sheet by the feed device without carrying with it the carbon-copy strip, which remains coupled with the line-spacing device.

Other objects and advantages of the invention will appear from the following specification and drawings.

A typical embodiment of the invention is illustrated in the accompanying drawings in which: Fig. 1 is a partial elevation view, in perspective, of the arrangement. Fig. 2 is a simplified perspective view of the feeding of the bill strip by the arrangement. Fig. 3 shews a partial elevation of the sheet-by-sheet feeding device, in section along the line 3-3 of Fig. 7. Fig. 4 shews the feed device of Fig. 3, with theparts in a different position. Fig. 5 shews the arrangement of pressure rollers for holding the bill strip against feed rollers in the printing positon. Fig. 6 shews the pressure rollers, of Fig. 5, in the lifted position. Fig. 7 is a longitudinal section through a portion of the sheet-'by-sheet feeding device, along the line l'| of Fig. 3. Fig. '8 is a cross section along the line 8-8 of Fig. 7. Fig. 9 is a special, arrangement for actuating the sheet-bysheet feeding arrangement. Fig. 10 is a control device for the arrangement of Fig. 9. Fig. 11 is a device for putting out of action the members actuating the sheet-by-sheet feeding device. Fig. 12 illustrates the effect of members for controlling the sheet-by-sheet feed. Fig. 13 is an arrangement for actuating the line-spacing device. Fig. 14 is another arrangement for actuating the line-spacing device. Fig. 15 shows a bill strip, and Fig. 16 another bill strip. Fig. 17 is a side view of a detail.

Mounted on the frame of the machine-recognizable by the outline I (Fig. 1)is a guide plate 3, provided with grooves 2. The paper-carriage is slidably mounted on the guide plate 3 by means of balls 4 The guide plate 3 carries a cam plate 5, the shape of which is shewn in Fig.

A baseplate 8 is mounted on cheek plates 6, I of the paper carriage (Fig. 2), and is provided with two trays, 9, In which serve to contain piles formed by folding the bill strip I23 in zigzag form, the strip being detachable into sheets of equal size.

The cheekplates 6, I of the paper carrier support two rollers fill, M. A shaft 22 of the roller 23 (Fig. '7) is rotatably mounted in a bush 23 which, in turn, is rotatable in the cheekplate 6. The bush 23 has a flange rim 24 which is provided witha tapered inner surface 25 in which a large number of very fine teeth are machined. Coacting with this serrated taper surface 25 is a correspondingly shaped and serrated cone 26 on a sleeve 2i which has a circular flange 23 and is adapted to slide axially on the shaft 22. By means of a spring 29, housed in a bore 33 of the sleeve this latter is pressed against the bush 23, said spring bearing against a bush 39 which is mounted on the shaft 22 and secured thereto by a cotter The right extremity of the sleeve 2i (Fig. 7) is provided with slots embracing the cutter Consequently, the sleeve 23,

though able to slide on the shaft 22 against the action of the spring 29, is prevented, by the cotter 32, from turning in relation to the shaft 222. Mounted on the right extremity (Fig. '7) of the bush Si is a hand wheel 3 the rotation of which enables the shaft 22 and thus the roller 23 to be conveniently actuated, through the bush 3! and cotter 32, as hereinafter described.

Rotatably mounted on the bush 23 is a small pinion 35 to which is secured a disc 33 on which a pawl 33 (Figs. '7, 8) is pivotally mounted by means of a threaded pin 35. An arm 39 of the pawl 33 carries a pin 40 surrounded by a spring ill clamped on to the extended hub 42 of a ratchet wheel 44 secured to the bush 23 by means of a screw 43. The pawl 38 coacts with the ratchet wheel 44.

The above described members for actuating the roller 20 function in the following manner. Rotating the pinion 35 in the clockwise direction according to Fig. 8, first causes the disc 36, connected to the pinion 35 to describe an idle movement, during which the pivot 31 of the pawl 38 moves through an arc, and the pin 40 of the arm 33 of the pawl 38 slides down, inside the loop of the spring 4i, since said spring is firmly retained, by friction, on the stationary hub 42 of the ratchet wheel 44. The descent of the pin 40, in the loop of the spring 4i, rocks the pawl 38 clockwise (Fig. 8) and comes into engagement with the ratchet wheel 44 after the disc 36 has described an idle movement of predetermined length. By this means, positive connection is established between the ratchet wheel 44 and the pinion 35,

through the pawl 38 and disc 36. Consequently, in

the event of any further clockwise movement (Fig. 8) of the pinion '35, the ratchet wheel 44 will be actuated by the pawl 38, and thus the bush 23, mounted in the cheekplate 6, will also be rotated. By means of the serrated cone 25, 26, sleeve 21 and cotter 32, the bush 23, in turn, actuates the roller axis 22, and thereby the roller 20.

A subsequent rotation of the pinion 35 in the counter-clockwise direction (Fig. 8) causes the pivot 37 of the pawl 38 to move in the anticlockwise direction (Fig. 8), so that the pin 40 of the arm 39 of the pawl 38 slides up inside the loop of the fixed spring 4!, thus disengaging the pawl 38 from the ratchet wheel 44. Accordingly, a counter-clockwise rotation (Fig. 8) of the pinion 35 does not actuate the roller 20.

Independently of the above described mechanical actuation of the roller 20 by means of the pinion 35, said roller can also be adjusted at will by hand. This is efiected by turning the handle 33 in the desired direction, whilst, at the same time, the sleeve 27 is moved towards the right (Fig. 7). For this purpose, the operator grasps aeraoer the handle 34 in the palm of the hand and with the assistance of the middle, or index finger, engaging the flange 28 of the sleeve 21, he can move the sleeve conveniently towards the right (Fig. '7) thereby disconnecting the sleeve 21 from the bush 23. The roller axis 22 can then be adjusted, as desired, through the cotter 32, without any resulting rotation of the bush 23' and of the ratchet wheel 4@ secured thereto by means of the screw 43. Consequently, the mechanical actuation of the roller by means of the pinion 35 is rendered inoperative as the result of displacing the sleeve 2i towards the right.

Gearing with the pinion 35 is a toothed quadrant 53, which is pivotally mounted on an axis 63 (Figs. 3, 4) a spring 6|, bearing against the quadrant 50 on the one hand, and the cheekplate 6 on the other, tends to draw the quadrant in the counterclockwise direction in Fig. 3. The quadrant 50 is provided with an arm 32, the lower end of which carries a cam 53, of circular design, coacting with a roller 64 mounted in a frame 55. Said frame is pivotable on a shaft 66 mounted in the cheekplates 6, T, a spring 61, tending to rock said frame in the anticlockwise direction. Rotatably mounted in the frame 55 is a roller 68 (Fig. 1) serving to press the roller 2|.

A cranked arm 69, attached to the quadrant 50 by rivets 10 (Fig. l) is rockably mounted-also on the axis Bil-on the outer side of the cheekplate 5, and carries, on its lower end, a pin H. The pin H projects into a slot 12, in a cranked lever 13 mounted on an axis I4 on the cheekplate 6. The axis 14 also carries two pivotally mounted levers 15 and 16, the latter carrying a pin 11. Fixed on the cheekplate 6 is a square pin 18. The pins 11 and 18 are embracedby the branches of a spring '18, which is coiled round the axis 14, and tends to hold both the pins 11 and 18 in the position shewn in Fig. 11. When the lever 16 is turned up or down in Fig. 11, the pin 11 arranged on the lever '6 slides in relation to the pin 18 arranged on the cheekplate 6, the two branches of the spring I9 being consequently caused to diverge. After the release of the lever 76, the spring 19 always returns this leverby means of the pins 11, 18-into the position shewn in Fig. 11.

The lever 13 is provided with a slot 80, in which a stop can. be clamped in any position. A shoulder SI on the lever 16 coacts with said pin 90 in such a manner that an anticlockwise movement of the lever 16 brings the shoulder 9| into contact with the pin 90, and, during the further movement of thelever 16, turns the lever 13 in the anticlockwise direction by means of the pin 90. On its free end the lever 16 carries a roller 32 coacting with the cam member 5 attached to the guide plate 3. By varying the setting of the pin 90,the stroke of the lever 16 remaining unaltered-the shoulder 3| can be brought into contact with the pin at different periods of said lever 13 by the pin 30; whereas a. clockwise movement of the lever 15 is not followed by any movement of the lever 18, the spring 94 alone being stressed.

The cam plate 5 (Fig. 1) mounted on the guide plate 3 is designed in such a manner that, when the paper carriage is moved from left to right-= viewed from the front of the machine-the roller 92 runs up the cam member 5, thereby rocking the lever 18 to a definite extent. If, during the further travel of the paper carriage, the roller 92 passes beyond the cam member 5, the lever 16 will be turned, in clockwise direction, by the spring 19 and returned into its normal position shewn in Fig. 1. During a-subsequent movement of the paper carriage, from right to ieftviewed from the front of the machine-the roller 92 of the lever 16 (whichis in its normal position) comes into contact with; the cam member 5 about midway along the guiding surface 95 of the latter (Fig. 12) During the further movement of the paper carriage from right to left, the surface 95 depresses the roller 92 out of its normal position, so that it runs along the underside of the member 5. When the roller passes beyond the left end of the member 5, the spring 19 returns the lever 10, and with it the roller 92, int the normal position shewn in Fig. 1.

In order to be able to prevent the lever 18 from being rocked (as the result of the upward travel of the roller 92 on the member 5) during the movement of the paper carriage from left to right,the lever 16 is connected at 96 (Fig. 11) with a rod 91 which is articulated at 98 to a manually operable lever 99, which is adapted to turn on a pivot I mounted on the cheekplate 8. By depressing the lever 99, the roller 92 is depressed,

.out of its normal position and against the action depressed, the short arm of the lever I02 drops behind the notch I04 and retains the lever 99 in the depressed position as longas may be desired. Turning the lever I02 in the anticlockwise direction releases the lever 98, so that the spring 19 can return the lever 18 into its normal position.

Mounted on the shaft 1 I of the roller 2| is a ratchet wheel I20 (Fig. 13), which is connected with the shaft II of the roller 2| in the same manner as the ratchet wheel 44 is with the shaft 22 of the roller 20. The roller 2| also is provided with a hand wheel |2| (Fig. 1) which serves-in the same manner as the hand wheel 34 of the roller 20to adjust the roller 2| independently of the actuation of the ratchet wheel I20, when a sleeve I22 is displaced, axially, at the same time that r the ratchet wheel I20 is actuated. The

- manual adjustment device I2I, I22 for the roller 2| is designed in the same manner as the already described device 34, 21 for the roller 20, so that there is no need to describe it more fully here.

The ratchet wheel I20 serves to actuate the roller 2| for, line spacing, and is actuated by a pusher 8|, with a flange 82 on its free end. The

x a roller 81.

pusher 8| is articulated, at 83, to a lever 85 secured to a shaft mounted in the cheekplates 8, 1. Clamped on the shaft 84 is an arm 88 carrying The lever 85 is engaged by a spring 88, which is secured to the cheekplate 8 and tends to keep the lever 85 in contact with a lug 88 on said cheekplate. The pusher 8| carries a pin I05 coacting with a wedge-shaped stop I08 secured to the cheekplate 6 by screws I06. The pin is maintained in contact with the stop I08 by a spring I01. manner that, when the pusher 8| moves to the right, in Fig. 13, the pin I05 ascends and engages with the ratchet wheel I20. The further movement of the pusher 8| towards the right affects the line spacing. When the pusher 8| moves towards the left, the pin I05 slides down the stop I08 and effects the positive disengagement of the pusher from the ratchet wheel I20.

Within the reach of the arm 86 and the roller 8 81, a stop I09 is attached to the guide plate 3 by means of an arm I I2, 0 on which said stop is adapted to pivot at NO. A control face III is formed on the stop I09, and this latter is maintained in contact with a pin II4 by means of a spring I I3. The stop I09 is so arranged that, when the paper carriage moves from left to rightviewed from the front of the machine-the roller 81 runs up the face III of the stop I09, thereby rocking thearm. 86 in the clockwise direction. This movement of the arm 86 rotates the shaft 84 and thus rocks the lever 85 in the clockwise direction, so that the pusher 8| is moved towards the right in Fig. 13 and produces a line-spacing movement of the roller 2|. When the paper carriage moves from right to left-viewed from the front of the machine-the roller 81 encounters the stop I09 and rocks it in the anticlockwise direction, against the action of the spring H3. The deflection of the stop I09 prevents the arm -8Ii from being turned. Consequently,line-spacing takes place only when the paper carriage moves from left to right.

As will be evident from Fig. 2, the bill strip I23, composed of a plurality of bill sheets, is taken up from the pile I24 bounded by the plates "9, and is The stop I08 is designed in such a led, over the rollers 2|, 20 and over a guide plate I25, to-a pile I26 bounded by the plates I0, The strip I23 is pressed against the rollers 20 and 2| by means of rollers 68 and I21, so as to move in I accordance with the actuation of the rollers. A guide plat-e I28 (Figs. 5, 6) servesto feed the strip under the lower roller 2|. The guide plate I25 also extends close up to the roller 2|, and enables a special backing sheet I29, under the strip I23, to be also fed to the impression point by means of the roller 2|. Said backing sheet is pressed against the roller 2I' by means of two rollers, I30, I3I.

The rollers I30, |3| can be lifted away simultaneously by a handle. With this object, the rollers I30 I3| are mounted in two-armed levers I32, I33 adapted to Divot on .axes I34, I35. In addition, a guide rail |5| is mounted (Fig. 2)

in the levers I33. A spring .135 causes the rollers I30, I3I' to press the backing sheet I29 against the roller 2|. The two levers I32, I33 are connected together by a link I31, which is articulated to the lever I33 at I38, and provided, at the other end, with a slot I39 engaged by a pin I 40 arranged on the lever I32. The spring I38 holds the parts in the-position shewn in Fig. 5. In order to lift the rollers I30, I 3|, the lever I32 must be swung anticlockwise on its pivot I34 by means of a handle I4I, whereupon, after a short stroke, the pin I40 encounters the left end of the slot I93, and on the lever I32 being moved further, also imparts an inticlockwise movement to the lever I33, through the link. I31. This movement of the levers I32, I33 lifts the two roll are lit, till away from the roller 2! (Fig. 6). The rollers tilt, ISL can. be locked in the operative position by a notched lever I42. This lever is adapted to turn. clockwise on its axis I43, against the action or the spring I, and is provided with a notch M5 (Fig. 5). The notch I45 snaps into engagement with the pin on the handle I II of the lever I32, when this is swung anticlockwise, and holds the levers 532, I33 in the position shewn in Fig. 6. On the lever M2 being slightly depressed, the notch M5 releases the lever I92, and the levers I32, i353 return into the position shewn in Fig. 5, under the action of the spring I36.

The roller i2?! which presses the strip I23 against the roller 26, is mounted in a frame 8 adapted to turn on an axis I47. A spring I48 engaging the frame I46 keeps the roller I2! pressed against the roller 21). The frame I48 can be turned, by hand, in the anticlockwise direction until a lug M9 comes in contact with a pin I56. This movement brings the spring I49 into position (Fig. 6) beyond the axis I41, thus retaining the frame I46 in the inoperative position.

As already described, when the quadrant 5G is actuated, the cam 63 lifts the presser roller 58 away from the roller M, to which it is allocated (Fig. i). To enable the presser roller 68 to be moved out of the way, independently of the action of the quadrant 56, in order to insert a fresh bill strip I23, a lever I66, pivotable on the axis Hill, is provided on the cheekplate 8. The anticlockwise movement of this lever is prevented by a pin E62. A pin 63 provided on the lever Itii, projects through a slot Hit in the cheekplate I5 and is connected to a link 169 (Figs. 3, 4) which, in turn, is articulated, at MS, to a lever It? pivotally mounted at ME. The lever I 67? has a hooked extension. let, against which, when in the normal position (Fig. 3) the quadrant is caused to bear by the action of a spring 66. Wt-ion the lever I60 is turned in the clockwise direction, a notch lid in the link 8G5 engages with a stop pin Iii (Fig. l). When the members i663, 565 are moved from the position shewn in I 3 into that of Fig. 4, the lever it'l is turned,

counterclockwise, through a corresponding angle, the quadrant being thereby moved, clockwise, against the action of the spring N36. The arrangement of the members ibii, It! is such that, after the shoulder iii) of the lint; Idb comes in contact with the pin iii, said members have a toggle-lever action and cannot be returned by the force of the spring 5i, into the normal pesttion shewn in Fig. 3. On the contrary the said return into normal position (Fig. 3) can be ef= iected only by moving the lever tdil in the aniclockwise direction.

The abovedescribed movement of the lever ibtl imparts to the quadrant a movement that is sufficient to bring the pawl 38 into gear with the ratchet wheel Although the movement of the lever ltd) imparts a movement to the pinion that movement is too small to bring the pawl into operation. Nevertheless, this movement of the quadrant 5G is sufficient to advance the cam far enough for it to displacethe roller Stand thus move the presser roller 68 away from the roller 25 (Fig. 4). Consequently, the movement of the lever hill from the position of Fig. 3 into that of Fig. enables the presser roller [it to be moved out of the way, independently of the mechanism actuating the roller.

The lever i5 (Figs. 1, 11) for rocking the lever l3 is-in contrasttc the lever IF-not influenced by the paper carriage, but by power members actuated by the driving motor. For this purpose, two bell-crank levers I82, I83, connected together by links I84, I85, are mounted on axes E80, I8I n the rear side of the machine frame. The upper arms (Fig. 9) of the levers I82, I83 are cranked, so that the link B4 lies in the plane of the roller 93 of the lever it. The two levers I82, I83 are connected together by a spring IBE, in such a manner that the spring tends to turn them clockwise, until the lever I82 comes in contact with a pin I8I. Attached to the link I85 is a lug I88, on which a lever I 99 is pivoted at I89. A spring ISI tends to hold the lever I90 in contact with a pin I92 attached to the lug I88. In the normal position (Fig. 9) the left end of the lever I90 bears against a pin I93, thereby setting the spring I9I in tension. A disc I95, to which is attached a pin I96, is seated on a shaft I94, to which a single movement is imparted by the driving motor at each working operation of the machine.

The pin I93 is attached to a rod I91 (Fig. and guided in a bore in a bracket I90 secured to the machine frame. The other end of the drawrod I91 is articulated, at 209, to a bell-crank lever I99. Said lever is mounted on an axis 2M and is. turned, anticlockwise, by spring 202, until the rod I91 comes in contact with the bracket Iflt. The lever I99 is connected at 203, with a key 204. Adjoining the key' 294 is another key 205, the stem of which is provided with a lug 206 engaging under the head of the key 2%. The key 265 if the totalising key of the machine. The result obtained by the provision of the lug 208 is that, on the key 204 being depressed, the totalising key 205 is depressedat the same time, whereas, on the other hand, the key 296 is not affected when the key 295 is depressed.

Depressing the key 2% moves the lever I99 clockwise. against the action of the spring 202, thereby displacing the attached draw-rod Itll towards the left in Fig. 10. The pin I93 is thusslid so far towards the left as to release the lever ltd, which then, assisted by the action of the spring I9I, moves in the anticlockwise direction until it encounters the pin I92. A nose 262, provided on the lever I9Ii, is thus brought within reach of the pin I96, located on the disc i535 which makes one revolution each time the machine is operated. Ihe contact of the pin H96 against the nose 2B1 moves the lever I90 towards the right in Fig. 9 and thus, through the medium of the link I85, turns the levers I82, tilt anti clockwise, against the action of the spring W5.

This counterclockwise movement of the levers E82, SW, depressed the link tilt and, by means of the roller 93, imparts an anticlockwork movement to the lever It. In this way, the lever 13 also turns in the anticlockwise direction, in the same manner as the lever I8 is turned by the movement of the paper carriage.

The typical arrangement described functions in the following manner. In order to explain the working of the typical embodiment a bill strip according to Fig. 15, constituted by a number of electricityand gas-bill sheets, of uniform size, will first be taken as a basis. The bill strip I23 is folded, zigzag, in accordance with the several uniform sheets, and laid, in the form of a pile I24, on the baseplate 8 (Fig. 2). By moving the handle I from the position shewn in Fig. 3 into that represented in Fig. 4, the presser rollers I30, I3I are lifted away from the roller 2i. By moving the lever I60 from the position the presser roller I21 is moved away from the roller 20. The backing sheet I29 can now be inserted, by means of the guide plate I25, under the roller 2| and brought into the position shewn in Fig. 6. By means of the guide plate I26, the

strip I23 can then be passed under the roller 2|, between the rod II and the presser roller I3I, and over the roller 20,its forward portion being piled, in zigzag form, between the plates 9 of the baseplate 6. The frame I46 carrying the presser roller I2! is now swung clockwise, so that the pressure roller comes to bear against the roller 20, as in Fig. 5. Pressure on the lever I42 causes the notch I45 to release the handle MI, and the pull of the spring I36 brings the two pressure rollers I30, I3I to bear against the roller 2|, thereby pressing the backing sheet I29 against the latter. As the pressure rollers I30, I3I make contact, the guide rod I5I bears against the strip I23 in such a manner that the said strip kinks (Fig 5) in passing between the rollers 20, 2|. Turning the lever I60 back from the position shewn in Fig. 4 into that shewn in Fig. 3, also causes the presser roller 68 to bear once more against the roller 2I which holds the backing sheet I29 and strip I23 at the same time. Arranged in front of the strip I23 is an ink ribbon II5 which serves to imprint on the bill strip the characters set by means of type carriers H6. The rear side of the bill strip I23 is preferably coated, wholly or in part, with an inking medium so that the characters printed on the strip are simultaneously visible on the backing sheet I29. Of course, with the same object, carbon paper of any kind, or a suitable inkribbon, may also be arranged between the backing sheet and the bill strip. I

The person operating the machine now brings the paper carriage into its terminal right hand position. as viewed from the front of the machine, so that the first column, for inserting the date of the bill to be made out comes into position facing the printing mechanism II8 of the machine. For clarity, this column is indicated by the numeral I in Fig. 12. When column I faces the printing mechanism II8, the roller 92 of the lever 16 (see Fig. i) occupies the position I (in Fig.12) in relation to the cam plate 5. After the date has been entered, the operator moves the paper carriage, successively into the positions corresponding to the columns marked 2 and 3, which serve to accommodate the old and new meter readings. When column 3 is opposite the printing mechanism, the roller 92 will lie on the surface 95 of the member 5, as indicated by the numeral 5 in Fig. 12. The operator will now move the paper carriage through such a distance that the tariff column (e. g. column 5) corresponding with the meter reading concerned comes opposite, the printing mechanism, and enters in that column the consumption, that is to say, the difference between the two meter readings. In order to pass from column 3 to column 5, the paper carriage must be moved further from right to left in Fig. 12. In this movement the roller 92 is depressed by the face 95 of the guide member 5, against the action of the spring 94 (Fig. 11) so that during the further movement of the paper carriage the roller 92 runs on the under side of the member 5. When the column 5 is in position facing the printing mechanism H8, the roller 92 assumes the position marked 5 in relation to the guide members 5. The consumption enters in the tariff class concerned, and multiplied by thecorresponding charge rates is entered as the sum due in column 6. The operator must therefore move the paper carriage, for example from column 5 to column 6. In so doing the roller 92 travels further under the guide members 5, and finally reaches the position marked 6 in relation to the cam plate 5 in Fig. 12.

If the operator now wishes to enter a further reading in the corresponding section of the bill, the paper carriage must be moved from column 5 back to column 2. During this movement of the aper'carriage from left to right in Fig. 12 the roller 81 (Fig. 13) runs up the inclined face III of the member I09 and is swung clockwise, so that the roller 2I is automatically turned to set the next line, through the action of the shaft 84, lever 95 and pusher 8i. At the same time the roller 92 also moves from left to right in Fig. 12, and finally passes, through the positions 5, 4, 3, into the position 2. If several successive entries are to be made in columns I6, for example, those relating to different meter readings of the same consuming apparatus, linespacing will be effected during the return of the.

paper carriage from left to right, but no forward movement to the full extent of a bill sheet. In so doing, the roller 92 never passes beyond the left end of the guide member 5. It is not until the column I is set facing the impression point that the roller 92 passes beyond the guide member 5 and is then returned by the spring 19 (Fig. 11) into normal position, viz. that marked! in Fig. 12. For printing in the other columns, such as 8 and 9, the roller 92 reaches the positions marked 8 and 9 in Fig. 12. Columns 1 and 0 of the typical bill represented in Fig. 14 serve for entering meter rent and sundry charges. These amounts are added, by the calculating mechanism of the machine, to those representing the consumption, so that the total amount due can be recorded, thus completing the bill. The several items and the total are printed, at the same time, and in the manner already described, on the backing sheet underneath the bill strip.

' In returning the paper carriage from column 9 to column I, i. e. from left to right in Fig. 12, the bill strip I23 is automatically advanced in such a manner as to bring the first line to be inscribed on the next bill, in each case, into position facing the impression point, as hereinafter described. During the return movement of the paper carriage, the roller 92 moves out of the position 9 and through 8 and 1 into the position 6'. In this position the column 8 faces the impression point, and the roller 92 comes just into contact with the face 9 of the cam plate 5.. During the further movement of the paper carriage from left to right, when the columns 5, 4, and 3 in succession pass the impression point, the roller 92 is moved upwards by the surface I I9 until it reaches the position 4 or 3' in Fig. 12. During the upward movement of the roller 92, the lever I6 (Fig. l) is turned anticlockwise and, after its shoulder 9I encounters the pin 90, carries the cranked lever 13 with it, also in anticlockwise direction. By means'of the pin-andslot connection II, 12, a clockwise turn is thus imparted to the lever 69, which, in turn, rocks the quadrant 50 in the clockwise direction, to a corresponding extent. In this movement of the quadrant 50, and before the pawl 38 has been brought by the loop of the spring 4I (Fig. 8) into engagement with the ratchet wheel 44, the presser roller is moved away by the cam 63 mounted on the arm 62. During the further movement of the quadrant 50, the pawl 38 engages the ratchet wheel 44, and the roller 20 is turned by this latter. By suitably adjusting the pin 90 in the slot (Fig. 1), the movements impartedto the several actuating members by the ascent of the roller 92 on the surface II9 of the guide member 5 are so harmonised that the extent of the effective movement of the roller 20 corresponds exactly with the height of a bill-sheet on the strip I23. Owing to the friction produced by the pressure of the roller I21 on the roller 20, the strip I23 is carried onward by the movement of the roller 20, and drawn past the lower roller 2 I, the presser roller 68 of which has been moved out of contact. The strip I23 is thus automatically -drawn from the pile I24 and deposited on the pile I26.

During the further rightward movement of the paper carriage the roller 92 finally passes beyond the guide member 5 and returns into the position marked 2 or 1. The lever I6 is returned into normal position by the spring I9 (Fig. 11) and thus imparts an anticlockwork movement to the lever 73 and--through the members II, 12, 69-a similar movement to the quadrant 50. This anticlockwork movement of the quadrant 50 moves the disc 36-through the pinion 35-in the anticlockwise direction in Fig. 8. At the same time, the pin 40 of the pawl 38 rises in the loop of the friction-tight spring 4I, so that the anticlockwise movement of the disc disengages the pawl 38 from the ratchet wheel 44. During this movement of the disc 36, or of the quadrant 50, the roller 20 is not moved, neither does the pawl slide on the ratchet wheel 44.

The rollers 20 and 2 I--of which the upper roller 20 serves for advancing the strip a full bill sheet height, and the lower roller 2I for line spacing-are actuated quite independently of each other. If several lines are to be entered, in succession, on a sheet of the bill strip, for example in between the columns 2 to Ii, then during each return movement of the paper carriage from column 6 to column 2--as already described-the roller 2I is actuated by the pusher 8i and ratchet wheel I20, but not the roller 20, inasmuch as theroller 92 does not run up the surface I I9 of the guide member 5. In line spacing by the roller 2I, the strip I23 is held by the pressure of the roller I2I (Fig. 5) on the roller 20, and through the line spacing movement of the roller 2i, a lo0pcorresponding in size with the number of lines spacedis formed in the strip I23 between the rollers 20 and 2|. This loop formation of the bill strip is facilitated by the arrangement of the guide rod I50 which, when the strip is taut, kinks the latter between the rollers 20 and 2| (Fig. 5). When the strip is subsequently ad-' vanced the full height of a bill sheet by means of the roller 20, the strip is first held between the two rollers 20 and 2I without slipping over the roller 2 I, and it is not until the strip I23 has been advanced, by the roller 20, in accordance with the size of the loop formed during the preceding line spacing, that further rotation of the roller 20 also advances the strip I 23 in relation to'the roller 2|. sheet on Fig. 16, five line-spacing movements have occurred, the roller 20 will afterwards first advance the strip I23'in accordance with these five lines, and not until this has been done does it draw the remainder of the sheet past the roll- If, for example, as in the upper er 2I, so as to bring into the printing position the first line to be printed on the middle sheet.

When a new backing sheet I 29 is to be inserted, while the strip I23 rests on the two rollers 20, 2I (according to Figs. 5 and 6), the presser rollers I30, I 3| are lifted away from the roller 2| by turning the handle MI in the'manner. already described. The presser roller 68 is moved away from the roller 2I by means of the quadrant 50, on the lever I60 (Fig. 3) being rocked. The backing sheet can now be slipped sideways under the strip I23 and on to the guide plate I25, and passed, under the strip I 23, over the roller 2I. After the backing sheet I29 has been set to correspond with the first line to be printed, the presser rollers 68, I30, I3I are again brought to bear on the roller 2 I, so that during the next line spacing movement of the roller 2i, the second line of the backing sheet comes into the printing position.

For constructional reasons, the relative. arrangement of the two rollers 20 and 2! may also be varied withoutdeviating from the invention. The bill strip may also be led over more than two rollers.

Fig. 16 represents a bill strip with component sheets of uniform size, and rows of figures-such as may occur, for example in pay sheets 8:0. For making entries on such bill strips, the paper carriage-in contrast to making entries on a bill sheet according to Fig. 15-is moved to and fro. but remains in one and the same position. cw. sequently, the arrangement according to the invention cannot be actuated by means of the guide members 5 as already'mentioned. In such case,

therefore, the forward movement through thefull length of a sheet is initiated by means of the arrangement shown in Fig. 9. After the items to be entered on the bill sheet concerned have been printed, the key 204, which acts on' the totalising key, by means of the attachment 206, is depressed. This action causes the lever I5 (Fig. 11) to be rocked, by the operation of the machine, in the manner already described, and the lever I3 (Fig. 1) actuates the roller 20 in the same manner as the movement of the paper carriage. As will be directlyevident from Fig. 16, the distances m to (14 between the last line total of one sheet and the first line (entry) on the next sheet, differ considerably. The diflerent dimensions of the spaces or to or are automatically taken into account by the separate operation of the two rollers 20, 2 I.

For making entries on a bill strip of the kind shown in Fig. 16, the line spacing is no longer effected by the-paper carriage but by the drive of the machine. With this object a special-arm 2I0 is attached (Fig. 14) to the shaft 84 (Fig. 13), in the vicinity of the cheekplate I. Coacting with the arm 2I0 is a two-armed lever 2, which is mounted at 2I2 on the cheekplate I. Connected with the right arm, of the lever? is a bar 2I3 extending across the whole paper carriage. The free end of the bar 2I'3 is connected with a lever (not shown in Fig. 14) mounted on the cheekplate 6. Normally, the right arm of the lever 2II bears against a pin 2I4. The bar 2I2 coacts with a roller 2I6 secured on an arm 2 I6. When entering several amounts in successive linesfor example as shown in Fig. 16--the arm 215 describesas the result of actuating the known vertical motor key-an upward movement in Fig. 14, at each working operation of the machine, thereby rocking the lever 2II anticlockwise, owing to the contact of the roller 2| 6 with the bar H3. The lever 2 turns the arm 2l0, and therefore the shaft 84, in the'clockwise direction. The lever 85 (see also Fig. 13) connected with the shaft moves the pusher 8| towards the right in Fig. 14 and thus-through the ratchet wheel |20-imparts a line-spacing movement to the roller 2!.

The arrangement according to the invention can also be applied to commercial writing machines which have no tranversely-displaceable paper carriage, but are equipped with a nondisplaceable paper roller. In such case, the arrangement according to the invention is attached to the frame carrying the paper roller, the lever 15 and roller 93 in Fig. 1 being turned by the device according to Figs. 9 and 10 actuated by the drive of the machine. At the same time, the bell-crank lever I99 is preferably connected directly with the totalising key 205, so that the key 204 is superfluous. After the total has been printed, the roller 20 which advances the strip sheet by sheet is automatically actuated, by the operation of the machine, in the manner already described. I

We claim:

1. An arrangement for feeding paper strips, on writing or printing machines especially on calculating or bookkeeping machines having a paper carriage movable in a machine frame, comprising a device adapted to feed a strip of paper line by line, at least one presser roller for pressing the paper strip against the feeding device, means for lifting away the said presser roller, a second feeding device adapted to feed a strip of paper by sections or relatively wide intervals, a pinion connected to the second feeding device, a rack sector engaging the pinion for driving the second feeding device, a springforcing the rack sector back to its position of rest, and a clutching device effective only in one direction of rotation and operating with a short idle stroke and arranged between the pinion and the second feeding device, the said lifting means being connected to the rack sector in such a manner that the said presser roller is lifted away during said short idle stroke upon operation in clutching direction and maintained lifted during the operation of the second feeding device.

2. An arrangement according to claim 1, in which a setting member of limited stroke is provided for moving the rack sector an extent corresponding to the idle stroke of the clutching device.

3. An arrangement according to claim 1, in which a guiding member having an upper and a lower inclined surface is provided disposed on the machine frame and in which a member is provided connected to the rack sector and is adapted to cooperate with either of thegsaid inclined surfaces during displacement of the paper carriage, the one inclined surface being effective when the paper carriage is moved in one direction and causing the said member to actuate the said second feeding device while the other inclined surface is effective when the paper carriage is moved in the opposite direction and moves the said member to an inoperative position.

4. An arrangement according to claim 1, in which a guiding member is provided having an upper and a lower inclined surface and is disposed on the machine frame, a member is provided connected to the rack sector adapted to cooperate with either of the said inclined surfaces during displacement of the paper carriage, the one inclined surface being effective when the paper carriage is moved in one direction and causing the said ,member to actuate the said second feeding device while the other inclined surface is effective when the paper carriage is moved in the opposite direction and moves the said member to an inoperative position, a manually operable adjusting device provided to set the said member to its inoperative position, and in which means are provided for locking the adjusting device in its effective position.

5. An arrangement according to claim 1, in which a driven member is provided connected to the rack sector, and in which a manually con-.

trollable coupling device is provided disposed between the machine drive and the said member.

6. An arrangement according to claim 1, in which a driven member connected to the rack sector is provided, and in which a coupling device'is provided controllable by manually operable means disposed between the machine drive and the said member, the manually operable means being adapted to control at the same'time the totalizing operation of the calculating machine.

WERNER KNIEHAHN. FRIEDRICH GUSTAV HUGO EGGERS. 

